Filter.



K. KIBFER.

FILTER.

APPLICATION FILED FEB. 12, 1908. RENEWED JULY 18, 1911.

Patented Jan. 23, 1912. Mums-sum 1.

4 FIG.

. Witnesses. 1

. K. KIEFER.

, I FILTER.

APPLIOATION FILED I EB. 12, 1906. RENEWED JULY 13, 1911.

' 1,015,326. I Patented Jan.23,1'912.

2 SHEETS-SHEET 2.

Witnesses. In uentor. 60.

WWW

- KARL KIEFER, F CINCINNATI, OHIO.

* FrL'rEn.

To all whom it may concern:

Be it known that I, KARL KIEFER, a citi zen of the United States, and resident of Cincinnati, in the county of Hamilton and State of Ohio, have invented a newand use t'ul Improvement in Filters, of'Whicht-he following is a specification.

My invention relates to filters in which compressed fibrous pulp, usually in a moistcondition, is employed as the filtering medium, called compressed pulp in the art.

The purpose of this invention isto simplify the construction of such filters, to facilitate their manufacture, to produce more efi'icient arrangement of its working parts and to cheapen the cost of the operation of such an apparatus. 7

The invention is illustrated the accom panying drawing, of which- Figure 1 is a vertical cross section (taken on a line running radially from the center and parallel to strips 3), through several of the filter elements and the surrounding. drum. Fig. 2 is a partial View of one of-the liquid conductors, showing also part of the drum in cross section. Fig. 3 isa' cross section through one of the liquid conductors and drum, taken on the line X-Y, F g. 2.

Liquid conductor I call that flat structure parallel to the filter layer, which supplies or drains one or more of such filter layers, with cloudy or cleariliquid respectively.

In F ig. l. M is a filter layer, circular in form, with a central hole C; B shows part of the drum in cross section. This drum: surrounds and incloses all the filter elements, and has a tight bottom andv removable cover, such as known in the art; The liquid con doctors L, L, between two filter layers, may l e single castings or ofother manufacture,

and consist of a peripheigalringkshaped part 1, shown in Figs. 1, 2 of a central ring-shaped part 2, andpga series of open, radial strips or lHll'S 3 connecting both rin'g. shaped parts. These stripsfor lo'ars connect with flat strips (3 of less depth. The flat strips "3 also connect peripheral rings 1 and central ring 2, such asis shown in crosssece tion Fig. 3. The ring-shaped filter layer M is tightly compressed at its peripheral and central portions in such a manner that; the suuuamount of mass is compressed to a less lliiclmuss, causing the filterlayer to he dense, and practically impervious, at the compressed portions. These filter layers are produced in a packing press with ring-shaped Specification of. Letters Patent.

the filter layers in contact.

I protuberances, such as described. in Pat ent #779,122, Aug."l5th,1905, reissued February th, 1906, #12,455.- The ring-shaped parts 1 and 2 of'the liquid conductors L and L correspond with and press against the ring-shaped compressed parts of the two filter layersin contact therewith, and when PATENT, oFrIcE: j Patent-em... 23,1912.

Application filed February 12,,1906, Serial No. 300,765. nen eaim 13, 1911 Serial no. 638,397; 1

the filter is closed, tl1e compression should i he strong enough to n'event any cloudy or clear liqmd issuing between the. compressed parts and the compression rings 1 and 2 of the liquidconductors L and L.

In order, to supply the filter layers M,

alternate liquor conductors L have peripheral openings 4, communicating with the v narrow spacebet'ween the filter elements and the drum for the inlet of the liquid. These openings connect with the open bars or 7 strips 3 of the liquidconductors L and with 7 All the liquid conductors L have the openings 5 on the central part for the outlet of the clear liquid of adjoining filter layers. Fig. 2 shows part of such an outlet liquid conductor in view.

These filter liquid'conductors may be lifted out of the drumand carried by the lifting instrument described in Patent #813,884, Feb. 20,1906. i

What I claim as my invention and desire to secure byLetters Patent is:

1. In a filter, the combination of an inclosing drum, a series of flat, disk-shaped filtering layers of compressed moist, fibrous pulp, each one previously compressed more at'the periphery than at the remaining surface, of liquid conductors having compres sion elements to correspond with the depression in thefilter layer.

2. In a filter, thev combination of an in-;

closing drum, aseries, of flat, disk-shaped filter layers ofmcompressed, moist, fibrous pulp, a series ofjnlet and outlet liquid conductors, each, of. said liquid conductors. supporting. ii -filtering layer and bearing upon one, said liquid conductors consisting of an open work partin contact wit-hthefiltering;v V

layers, and thickergparts in contact with theaedges of said filter layers, said filter lay-- ers being previously compressedzto substantially correspond Wit-hthe outlines of the liquid conductor, and out ofcontact with 'it. 8. In a,filter, the combination ofgan im closing drum, a series of fiat, disk-shaped i filter layers of compressed, moist, fibrous pulp, a series of inlet and outlet liquid conductors, each of said liquid conductors supporting filtering layer and bearing upon open work one, saidliquid conductors consisting'ofan part in contact withfthe filterin layers,

edges ofsaid' filter layers, said filter layers I being previously compressed andout of contact with the' liquid conductor. Ina filter-, jthej combinationof an ;inclosing 'drum a series. of fiatfdisk-shap'e'd .10

. pulp, 'a' series efiinlet andoutl-et liquid cona filtering layer and bearing i closing drum, a I Y filter layers. of

ductors, each liquid conductor supporting liquidcon ductors consisting of an open-work part and a thicker-part in contact wit-h the compressed, moist of inlet and, outlet liquid con- ,pul'p, a series .-'d uctors consistingof azseries of bars spaced I ing layers of compressed .moist, fibrous pulp, with a series of inlet and outlet liquid con,-'

*ductor's,

apart so as to support the filter layersyand o fja height to. leave under' compression a space suflicient for: draining and supplying:- the 7 liquid between said]- filter layers, I and contact with the. 1 edges of the filter pulpadapted :to more compress them than .the

having thicker edges in the. combination of an :in cl'osing drum,

a series of fiat, disk-shaped filterconsisting oif" open; work bars and thicker. marginal parts protruding equally on both sides over said bars and contacting with said filter layer, with means for supply- 'in and draining the liquid conductors.

; In a filter, the combination of an inseries o tfiat, disk-shaped "closing dru'm,-. a

ffiltering layers-of compressed, moist fibrous pulp,

' center; and periphery,

a'series of inlet liquid conductors supplying and supporting said filter layers, each consistin of a'single part to be handled, said liquid conductor 7 and being of open work manufacture in the ring-shaped space between said thicker parts.

8. In a filter, the combination of an in closing drum, a series-of, fiat, diski-shaped filtering layers of compressed, moist, fibrous pulp, an open work disk or plate of a single manufacture, a filter layer in contact with its upper face and supported by it, said filter layer more compressed peripherally and cen trally.

9. In a filter, the combination of an inclosingdrum, a series of flat, disk-shaped filtering layers of compressed, moist, fibrous pulp having peripheral depressions produced on both sides of the filter layer, with inlet and outlet liquid conductors.

iyifil ter .layers 10. In a filter, the combination of an inclosing drum, a series of fiat, disk-shaped and thicker parts. in 'contact'with the,

.by U-shaped compression rings, afeentral compression boss or hub, the inlet filter layers of compressed, 'I'rioist,-;fibrous' nectin said-strips or bars with the central -hole o the central boss or hub.

;m'let liquid conductors and a series of outlet -work strips or bars, .erally by compression rings and having a liquid conductors having openings within them there with closing drum, 'pressed,n1o1st, fibrous pulp 1n contact with a serles of liquid conductors, conslsting of an r being thicker at the- ;interior less compressed part of compressed, moist, fibrous pulp incommunication with a series of'inlet liquidconductors and a series of outlet liq-p uid conductors, both consisting of o err-work stripsor bars, and surrounded peripherallyand havingv liquid conductors having openings within the U-shaped' peripheral compression. rings I connectingthem with strips or bars, the outlet liquid conductorshavmg openings con- 5 lIhIn affilter, the combination of an inclosing drum, a series. of filter layers of compressed, moist, fibrous pulp, 'of a series of liquid conductors, both consisting of open and surrounded periphcentral compression boss or hub, the inlet theperipheral compression rings connecting strips or bars, the outlet liquid conductors having openings connect-- ingsaid strips or bars with the central hole of the central boss or hub.

12. In a filter, the combination of an ina serles of filter layers of comopen work fiat structure surrounded by U- shaped compression rings higher than said structure, and having a central compression bossalso higher. p

13. In a filter, the combination of a fiat,

disk-shaped filter layer of moist, fibrous pulp, and a plate having a thick outer marginal part'and an interior part composed of discontinuous parts thinner than the mar-- ginal part and parts thinner than said dis- 5 continuous parts joining said discontinuous l parts to each other and to the marginal par whereby liquid conducting channels are formed on the interior of the plate, said filter layer being previously compressed. ex traneously of any filter structure with which it is in contact during filtration, with outer marginal part more highly compressed than its interior, to correspond with the thick outer' marginal part of the plate. 5

14. In a filter, the combination of a Hat disk-shaped filter layer of moist, fibrous pulp, and a'plate having a thick outer marginal part and a thinner interior part having a series of intercommunicating channels, said filter layer being previously compressed extraneousl of any filter structure with which it is 1n contact during filtration, with 'its outer marginal. part more highly com pressed than its interior, to correspond with the thick marginal partof the plate, and its being supported across the channels of the interior part of the plate, leaving them open.

15. In a filter, the combination of afiat disk-shaped filter layer of moist, fibrous pulp, and a plate having a'thick outer-marginal part and a thinner interior part hav ing an annular channel aroundinside the 5 thick marginal part, and having transverse channels intercommunicating through said annular channel, said filter layer being previously compressed extraneously of any filter structure with which it is in contact durlfl ing filtration, with its outer marginal part more highly compressed than its interior, to. correspond. withthe thick marginal part pff the plate, and its interior less compressed part being supported across. said annular channel from the thicker marginal part to the thinner interior part, and across the transverse channels of the interior part,

leaving said annular channel and said trarisverse channels open.

16. In a filter, the combination of a fiat disk-shaped filter layer of moist, fibrous pulp, and a plate having a thick outer marginal part and a thinner interior part whereby an ofiset is formed around inside the thick marginal part, and the plate having an annular channel around inside said marginal part adjacent the offset, said filter layer being previously compressed extra-T neously of any filter structure with which it so is in contact during filtration, with its outer marginal part morecompressed than its interior, to correspond with the thick outer marginal part of the plate, with an ofiset to correspond with the offset of the plate, but

being supported across said annular channel, leavingit open.

17. In a filter, the combination of a fiat disk-shaped filterllayer of moist, fibrous pulp, previously compressed extraneously 4 of any filter structure with which it is in contact during filtration, with a morecompressed gaskehtor ming part and a less compressed filtering part, and a plate having' a thick part to engage with the gasketforming part and a thin channeled part to engage with the filtering part of the layer, the channels of said thin part being intercommunicating and the filtering part of the layer being supported across said channels, leaving them open.

18. In a filter, the combination of a fiat disk-shaped filter layer of moist, fibrous pulp, previeusl'y compressed extraneously of any filter structure with which it is in con-.

tact during, filtration, with a ,more com pressed gasket-forming outer marginal. part and a more compressed gasket-forming central part surrounding a central opening therein, and having a less compressed ,fil-

. tering part lying between its outer marginal part and its central part, and a plate having a thick outer marginal part and a thick central hub, to corres end with the more compressed parts of t layer, and having 35 thinner channeled part to engage with the filtering part oflthe layer, the channels of said thin part being inter-communicating,

and the filtering part of the layer being supported across said channels, leaving themopen v n.

19. In a filter, a liquid conductor with intercomniunicating' channels, and a filter layer composedexclusively 5r moist, fihrous pulp, previdusly' compressed extranedusly of any filteiistructure with which itrs in contact during filtration, with its fibers in direct contact with said liquid conductor.

around inside said marginal part, andsaid plate havingan annular channel around inside the thicker marginal part adjacent said oii'set, the transverse channels of said interior part being intercommunicating through said annular channel, and a filter pulp, previously compressed extraneously of any filter structure with which it is in con tact during filtration, with its fibers in di-' rectcontact with said. liquid conductor.

layer composed exclusively of moist, fibrous 22. In a filter,'a liquid conductor having a thick outer marginal part and a thinner transversely channeled interior part forming olisets with said thick -tiiarginal part around inside the marginal'part on both sides of the plate, said plate having an an nular channel around inside the thick marginal part adjacent each oiiset on each side of the plate, and the'channels of the interior part being on both sides of the-plate and being intercommunicating on their respective' sides of the platethrough said annular channels on the respective sides thereof, and filter layers, composed exclusively of moist, fibrous pulp, previously. compressed extraneously of any filter structure with which they are in contact during filtration, with their fibers in direct cont-actwith the sides of said liquid conductor.

' 23. As a new and improved article of manufacture, a flat disk-shaped filter layer of moist, fibro pulp, compressed extra neously of the filter, with a more compressed outer marginal gaeketdorming part and a lesscompressed interior filtering part, whereby it is self-supporting and independent of any supporting structure, I

24. As a new and improved article of manufacture, a fiat dislr-shapedtllterl ayer of. I I10iS t fib rofis f pulpgiicomprssied Q'xtfa nequsl'y ofthe filter, with its outer marginal pa rt more cqmp i*esseda than ifs ihterior'..pabrt forming offsets on :both its sides, aroun .25, As a 'new' and in iprQveaaft ic le 0f compressed extravneoufsly ofthefilterg with a less c ompress'ed,

"pQ whereby said fibrous pulp layer may be 15 handled, egteriorly of the filter, in its moist condition,

the intrior part againstfrupture," Q

independently of any supporting structure'. I

In testimony whereofflI have signed my namem -this specification 'in the ppesence 20 of twp'isubscribi ng Witnesses" -easilydisrupted-interior filteringparm and G. 1W; Wlgnbw, .a more compressed Outer marginal partsupv I J AgrLE ro'zwf. 

